system of weights and measures 度量衡制度 ; 计量制
The metric system of weights and measures shall be introduced in this contract unless otherwise instructed by the Purchaser.
合同中应采用公制计量单位，除非买方另有要求。
Metric system: the decimal system of measures, capacities and weights with the meter, litre and the Gram as the bases.
公制：十进制的度、量、衡制度。分别用米、升、克为基本单位。
Established in 221 BC, in the Qin dynasty, Qinshihuang unified weights and measures, and became a unified system for the measurement of milestone in ancient China.
公元前221年秦朝建立，秦始皇统一度量衡，成为中国古代统一计量制度的里程碑。
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